How to create a dynamic map in hand of FPS like Far Cry 2 or Firewatch?

Hi

I am trying to figure out how to create a diegetic map that will reflect the position of the player. This map will be in the hands of the Player (FPS) similar to Far Cry 2 or Firewatch.

Far Cry 2 map in hand

Firewatch map in hand

What is the concept that I should look into to:

1. Create a map in the hands of the FPS player

2. Update the player position on that map.

Thanks